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Set i 'employees' / zhu, tsai, xu, lu, chen, wang, shortage / j 'workstation' / zone1, zone2, zone3, zone4, vacation, notassigned / t 'days'/1*13/ work_zone(j) / zone1, zone2, zone3, zone4/ employees(i) / zhu, tsai, xu, lu, chen, wang/ $onImplicitAssign Parameter preferences(i, j); preferences('zhu'...

assign_employee(j, t).. sum(i, x(i, j, t)) =e= 1; How do I get Vacation, noassignment not to be bound as well =1 Set i 'employees' / zhu, tsai, xu, lu, chen, wang / j 'workstation' / zone1, zone2, zone3, zone4, vacation, noassignment / t 'days'/1*10/ work_zone / zone1, zone2, zone3, zone4/; $onImpl...

I want to find the shortest path from point A to point G No repetition, no turning back image.png A B C D E F G A 8 6 B 5 10 C 6 9 D 10 E 7 F 11 G or A.B 8 A.C 6 B.D 5 B.E 10 C.D 6 C.F 9 D.G 10 E.G 7 F.G 11 I don't know how to write variables and equations. Can anyone provide me with a sample?

Thank you very much to the people who helped me. The problem has largely been solved. But there are still some small problems to be improved. equations obj 'Cost summary' Nutrition1(j) 'Identify foods from the matrix that meet the nutritional requirements' Nutrition2 'Upper limit of saturated fat' W...

I added some notes and changed some practices
Using mip, I still can't get the results I expect

HELP! I have two questions. This is a question about daily nutrient. 1.When you can only choose to eat one item a day, what do you need to eat to satisfy your nutrition? 2.When you have to eat three different foods every day, how do you choose to meet your nutritional needs? *Saturated fat no more t...